Look up on Saturday and if skies are clear, you'll be lucky enough to spot the full moon.
The May full moon is commonly called the Flower Moon, and it also goes by the name of the Corn Planting Moon and the Milk Moon. This year, however, it gets another name — Blue Moon.
A Blue Moon is most commonly the second full moon in a month (as explained in the video above), but that's not the case this weekend.
Normally, there are three full moons per season, but this weekend's Blue Moon is the third of four full moons in a single season — from the first day of spring to the first day of summer.
Don't go outside expecting a moon that's blue in color, though. It's only blue in its namesake.
A 'traditional' Blue Moon generally occurs once every few years. The last one was July 31, 2015 and the next one won't be until January 31, 2018.